NOTES ON THE IDENTITY OF THE DERMAPTERA. 



139 



recta, mutiea. Paulo major F. minori, tota picea seu fusco-rufescens, margine 

 thoracis postico et imprimis pedibus pallidis, glabra. Forfex recta, inermis. 



The above description fits in very well with the creature usually 

 referred to as Labia warginalis, Thunberg, with which L. ochropus, 

 Stal, is usually identified ; thus, as a matter of fact, three distincii 

 species have been confused ; the West African one I have separated 

 under the name L. uirenii, and the Abyssinian and East African one is 

 also distinct, but has not yet been described. On the assumption that 

 Thunberg's specimen was South African, it is worth retaining his 

 name for the South and Central African form, 



Stal's description is as follows : — 



F. ochropus: nigropicea : antennisarticulis subelongatis, flavotestaceis, apicem 

 versus fuscescentibus ; elytris fuscopiceis ; alls, forcipe pedibusque flavescentibus : 

 forcipe parva, subcurvata. 



This agrees perfectly well with my South African specimens, and 

 I feel that de Bormans was right in considering marginaUs of Thunberg 

 and oc/iropiia of Stal as identical. 



^ F. fasciata : picea, antennis albo-annulatis. Quadruple major F. minori, tota 

 picea seu fusco-rufa, glabra, antennis cingulo albo ut in ichneumonibus. Forfex 

 recta, inermis. In elytrorum apice lineola alba obsoleta. 



I am convinced that this is Nala lividipes, Duf. I have seen 

 specimens, notably from the Kalahari Desert, which are quite four 

 times as big as Labia minor, and there is often a very narrow, pale 

 transverse band across the wing-scales just beyond the tip of the 

 elytra; I possess specimens from the French Congo with the antennae 

 ringed with white. Thunberg's name has a year's priority over 

 lividipes, Dufour (1828) and I am accordingly reluctantly obliged to 

 relegate Dufour's name lividipes to synonymy and establish Nala 

 fasciata, Thunb., as the correct title of this much-named species. 



F. capenm : flava abdominis apice nigro ; forfice arcuata, mutiea. Duplo 

 minor F. auricularia, tota glabra, flava, apice abdominis supra nigro seu piceo. 

 Forfex valde arcuata, inermis. 



The description of this corresponds very well with Biaperasticus 

 erythrocephalus, Oliv., and I do not think there is much doubt as to 

 identity. Fortunately, the accepted name is the older one. 



De Bormans makes no suggestion about either of the two latter 

 latter cases. 



Summary. 



Forficida flexuosa, Thunberg, is not B\ flextiosa, Fabr., but a mis- 

 identified macrolabious F. auricularia, L. 



Forficida dentata, Thunberg, is not F. dentata, Fabr., but a misidentfied 

 AHclienomus javaiuis, Borm. 



Forjicula marginaUs, Thunberg, stands, F. ochropus, Stal, being 

 synonymous. 



Forficula fasciata, Thunberg, replaces the name lividipes of Dufour, 

 and the correct name of the species is therefore Nala 

 fasciata, Thunberg. 



